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  • 1
    Electronic Resource
    Electronic Resource
    Heats of mixing of binary systems of n-butylamine with toluene and methylcyclohexane at 288.15, 298.15 and 308.15 K (1988)
    s.l. : American Chemical Society
    Journal of chemical & engineering data 33 (1988), S. 12-14 
    Details
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/je00051a005
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  • 2
    Electronic Resource
    Electronic Resource
    Equilibrium in biphasic aqueous systems: A model for the excess gibbs energy and data for the system H2O−NaCl-1-propanol at 25°C (1994)
    Springer
    Journal of solution chemistry 23 (1994), S. 275-305 
    Details
    ISSN: 1572-8927
    Keywords: Liquid-liquid equilibrium ; aqueous two-phase systems ; mixed-solvents ; excess Gibbs energy model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Liquid-liquid equilibrium data were measured for the 1-propanol-NaCl−H2O system at 25°C. Liquid-liquid equilibrium in aqueous biphasic salt systems containing salts and alcohols or polymers was modelled using an expression for the excess Gibbs energy of the solution. The model is based on modified forms of the nonprimitive Mean Spherical Approximation, the Bromley equation, and the Flory-Huggins theory and requires three and five adjustable parameters for ternary and quaternary systems, respectively. The model accurately correlated binary water-polymer or water-alcohol vapor-liquid equilibrium data and liquidliquid equilibrium data for seven ternary and three quaternary aqueous biphasic salt systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00973551
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  • 3
    Electronic Resource
    Electronic Resource
    Mean activity coefficients at 25°C for NaBr−Ca(NO3)2−H2O mixtures, a ternary system without a common ion (1991)
    Springer
    Journal of solution chemistry 20 (1991), S. 479-493 
    Details
    ISSN: 1572-8927
    Keywords: Mean activity coefficient ; sodium bromide + calcium nitrate ; ion-selective electrodes ; emf
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The mean ionic activity coefficients of NaBr in aqueous mixtures of NaBr and Ca(NO3)2 were determined at 25°C at a total ionic strenghth of 3, 4.5 and 6 molal. The measurements were made using an electrochemical cell with the ion-selective electrodes (ISE), Na-ISE against Br-ISE as a reference electrode. The experimental mean activity coefficients of NaBr obey Harned's Rule. The mean activity coefficients of Ca(NO3)2 were calculated using the cross differentiation of the mean activity coefficients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00650804
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  • 4
    Electronic Resource
    Electronic Resource
    Correlation for the third virial coefficient using Tc, Pc and ω as parameters (1983)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 29 (1983), S. 107-113 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An empirical correlation for the third virial coefficient of nonpolar gases is developed. The correlation requires a knowledge of the critical temperature, critical pressure and acentric factor of the compounds for the prediction of third virial coefficients in the absence of experimental data. The use of the correlation for mixtures of nonpolar gases, including quantum gases, requires one binary parameter for each binary interaction. Predictions are in good agreement with reported experimental data and with the values obtained with existing correlations.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690290115
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  • 5
    Electronic Resource
    Electronic Resource
    Nonrandom factor model for electrolyte solutions (1991)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 37 (1991), S. 147-149 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690370114
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  • 6
    Electronic Resource
    Electronic Resource
    A nonrandom factor model for the excess gibbs energy of electrolyte solutions (1988)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 34 (1988), S. 803-813 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A new approach to represent the deviations from ideality of electrolyte solutions is derived on the basis of the assumptions of specific interactions of Brönsted and of local electroneutrality of Chen. The model consists of two contributions due to long-range forces, represented by the Debye-Hückel theory, and to short-range forces, represented by local compositions through nonrandom factors. With only two adjustable parameters per electrolyte, the model is valid for the whole range of electrolyte concentration, from dilute solution up to saturation. Results are compared with those obtained from two-parameter or one-parameter models of Meissner, Bromley, Pitzer, and Chen et al. The model presented in this work consistently produces better results and reproduces the experimental values from the dilute region up to saturation.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690340510
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  • 7
    Electronic Resource
    Electronic Resource
    A group contribution method for second virial coefficients (1989)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 35 (1989), S. 481-489 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A semitheoretical group contribution method for predicting pure-compound second virial coefficients is proposed. An expression for the second virial coefficient, expressed as the product of a nonpolar and a polar contribution, is derived using statistical thermodynamic concepts and an approximate form for the radial distribution function. For polar compounds the nonpolar contribution is assumed to be given by the Tsonopoulos correlation with the nonpolar acentric factor defined by Thompson and Braun. The polar contribution is represented by an energetic term expressed in terms of group contributions. Second virial coefficient predictions for strong polar and associating systems are comparable with those obtained with the correlations of Tsonopoulos and Hayden and O'Connell. Cross-second virial coefficients for mixtures obtained using well-defined molecular mixing rules compare well with literature values.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690350316
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of the concentration of DODMAC and 1-decanol on the behavior of reverse micelles in the extraction of amino acids (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 46 (1995), S. 343-350 
    Details
    ISSN: 0006-3592
    Keywords: reverse micelles ; decanol ; amino acid extraction ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The concentrations of dioctyldimethyl ammonium chloride (DODMAC) and 1-decanol in isooctane needed to form reverse micelles by phase contact have been determined. The behavior of these reverse micelles in the extraction of aspartic acid, glutamic acid, and threonine was studied by analyzing all of the ionic species in the aqueous phase. The amino acid is extracted from the aqueous phase by exchanging with the Cl- counterions of DODMAC in the reverse micelles. The ionic species in the reverse micelles tend toward their undissociated states as the water uptake by the reverse micelles decreases. The effect of 1-decanol on the extraction of the amino acids with two negative charges is due to the change in the water uptake of the reverse micelles. The concentration of DODMAC has no effect on the ion exchange of the amino acid with one negative charge with the Cl- counterions of DODMAC in the reverse micelles. Higher molar ratios of decanol to DODMAC favor the selective separation of amino acids with different charge numbers. © 1995 John Wiley & Sons, Inc.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260460407
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  • 9
    Electronic Resource
    Electronic Resource
    An improved lattice-fluid equation of state for pure component polymeric fluids (1982)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 22 (1982), S. 345-348 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The Fluid-Lattice Theory (Ising Fluid), recently tested by Lacombe and Sanchez, has been modified by introducing the typical Flory's surface-to-volume ratio of the characteristic-segment of a polymeric liquid. This surface-to-volume ratio is not an adjustable parameter. It is obtained from Bondi's tabulations. The resulting new equation of state has three adjustable parameters per component and it represents a definite improvement for the fitting of P-V-T data for polymeric liquids. Extension to mixtures is not tested in this work but, in principle, it can be done by well-established methods.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760220603
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  • 10
    Electronic Resource
    Electronic Resource
    On the fluid lattice and Gibbs-Di Marzio theories (1984)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 22 (1984), S. 601-606 
    Details
    ISSN: 0360-6384
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1984.130221104
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